S
M
T
W
T
F
S
26
61°
45°
27
73°
45°
28
63°
50°
29
59°
45°
30
55°
43°
1
50°
37°
2
46°
32°
3
61°
34°
4
73°
46°
5
64°
43°
6
55°
40°
7
58°
46°
8
62°
50°
9
73°
49°
10
57°
41°
11
59°
41°
12
60°
50°
13
63°
48°
14
66°
51°
15
71°
50°
16
70°
52°
17
65°
51°
18
71°
53°
19
72°
52°
20
68°
47°
21
67°
48°
22
67°
48°
23
68°
50°
24
69°
52°
25
70°
52°
26
70°
51°
27
73°
50°
28
73°
53°
29
77°
56°
30
78°
57°
31
80°
60°
1
79°
59°
2
75°
55°
3
80°
61°
4
81°
62°
5
81°
63°
6
80°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mendon
Mendon's May 2026 forecast shows daily high temperatures ranging from 55° to 81°, with overnight lows between 40° and 63°. The average high for May is 70° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Mendon. See also: June | July | August.
